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First Law of Motion

An object of ...

Question

An object of mass 2 kg is sliding with a constant velocity of $4 m s^{- 1}$ on a frictionless horizontal table. The force required to keep the object moving with the same velocity is

A

32 N

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B

0 N

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C

2 N

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D

8 N

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Solution

The correct option is B
0 N

Ideally, a frictionless horizontal table offers no resistance to motion. So the object will continue to slide at $4 m s^{- 1}$ without any application of an external force.

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Similar questions

Q. Question 6
An object of mass 2 kg is sliding with a constant velocity of 4 ms^-1 on a frictionless horizontal table.
The force required to keep the object moving with the same velocity is
(a) 32 N
(b) 0 N
(c) 2 N
(d) 8 N

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